Height Estimation of Boreal Forest: Interferometric Model-Based Inversion at L- and X-Band Versus HUTSCAT Profiling Scatterometer
Height Estimation of Boreal Forest: Interferometric Model-Based Inversion at L- and X-Band Versus HUTSCAT Profiling Scatterometer
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DOI：
10.1109/lgrs.2007.898083
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发表时间：
2007-07
影响因子：
4.8
通讯作者：
J. Praks;F. Kugler;K. Papathanassiou;I. Hajnsek;M. Hallikainen
中科院分区：
文献类型：
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作者：
J. Praks;F. Kugler;K. Papathanassiou;I. Hajnsek;M. Hallikainen
在这封信中，我们介绍了FinSAR项目的结果，其中E-SAR和赫尔辛基理工大学散射计（HUTSCAT）仪器一起操作，以验证北方森林的树高检索算法。该运动于2003年秋季在芬兰开展。该战役的主要仪器是E-SAR机载雷达（在L和X波段工作）和HUTSCAT直升机载剖面散射计（在X和c波段工作）。我们比较和讨论了四极偏振干涉合成孔径雷达（SAR） l波段反演森林高度和单极偏振干涉合成孔径雷达（SAR） x波段反演森林高度与HUTSCAT散射计数据估算的森林高度。结果表明，用两种不同的雷达仪器估算的森林高度值具有较好的一致性。HUTSCAT和E-SAR高度估计（在l波段和x波段）之间的相关性强调了两种方法获得的结果之间的良好一致性。
In this letter, we present results from the FinSAR project, where the E-SAR and Helsinki University of Technology Scatterometer (HUTSCAT) instruments were operated together in order to validate tree-height retrieval algorithms for boreal forest. The campaign was carried out in Finland in fall 2003. The main instruments of the campaign were the E-SAR airborne radar (operating at L- and X-band) and the HUTSCAT helicopter-borne profiling scatterometer (operating at X- and C-band). We compare and discuss forest height obtained from the inversion quad-pol polarimetric interferometric synthetic aperture radar (SAR) data sets at L-band and forest height obtained from the inversion of single-pol X-band in SAR data with forest height estimates from HUTSCAT scatterometer data. Our results show that the forest height values, which are estimated by means of two different radar instruments, are in good agreement. The correlation between HUTSCAT and E-SAR height estimates ( at L-band and at X-band) underlines the good agreement between the results obtained by the two approaches.